EUVD-2026-76797
GHSA-c378-rx7g-g777
Severity by source
AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Contributor is PR:L in WordPress; XSS executing in admin's browser changes scope (S:C); no direct availability impact from XSS.
Primary rating from Vendor (wpscan).
CVSS VectorVendor: wpscan
Lifecycle Timeline
4DescriptionCVE.org
The WP Highlight Box WordPress plugin through 1.0 does not escape some shortcode attributes before outputting them in a page where the shortcode is embedded, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
AnalysisAI
Stored Cross-Site Scripting in the WP Highlight Box WordPress plugin (through version 1.0) allows authenticated users with the contributor role or higher to inject persistent malicious scripts via unescaped shortcode attributes. When a page containing the crafted shortcode is viewed by higher-privileged users such as editors or administrators, the injected script executes in their browser context, enabling session hijacking, privilege escalation, or unauthorized administrative actions. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to hold at minimum a contributor-level WordPress account on the target site - subscriber-level accounts are not sufficient. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world priority for this vulnerability is moderate despite the 6.8 CVSS score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch has been identified at time of analysis - the plugin appears to remain unpatched through version 1.0 based on WPScan reporting. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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